A severe manifestation of lupus is nephritis--when lupus is causing inflammation in the kidney. The current evaluation of lupus nephritis involves a biopsy of the kidney to assess the type of inflammation. We are investigating whether MRI could be used to look for the inflammation. We do not know the answer to the question currently. If your doctor thinks you need a kidney biopsy to assess your lupus the MRI would be added and then compared to what is seen on the biopsy.